Given the current political situation in Catalonia, the topic could not have been more controversial. Punset made it clear that, according to the Spanish Constitution, sovereignty belongs to the Spanish people and no other organ in the country can be sovereign. He said, "Not even the Catalan Parliament can be sovereign, though an autonomous community could be independent if the Constitution were amended".

Punset spoke on other topics besides the situation in Spain, including the hypothetical loss of sovereignty of the Member States of the European Union. He rejected the notion that when political measures are adopted affecting all the EU Member States, individual countries suffer a loss of sovereignty. "The sovereignty of the Member States would only be in danger if a simple majority were all it took to change EU treaties, and not an unanimous vote," he said.

Prof. Punset used the example of small states such as Malta and Cyprus, which currently have the power to veto any treaty. "The day in which a vote on a treaty requires only a majority, the Member States will have lost and sovereignty will be dead. But to reach that point, the European Constitution would have to be amended", he said. According to Punset, the transfer of powers need not be negative for the Member States. He said, "What we need is a world political authority that controls multinational economic power. If economic globalization exists, it should also exist in the political sphere. International society cannot live in absolute chaos without a universal political power."

With this idea, Punset rejected the call for "micro-politics". "The problem isn't the multiplicity of identities, but their incompatibility. You should be able to exercise your right as a citizen of your city, your region, your country, Europe and the world", he stated.